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Apogee Instruments Affordable MQ-100 Compact PAR Meter with Original Quantum Sensor: Amazon.com: Industrial & Scientific
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Buy Our Best Selling Apogee PAR Meter, The MQ-500 Full Spectrum Quantum Meter, Accurate for All Light Sources Including LED, Lightweight, Waterproof Sensor, Long Warranty. Made in Logan Utah by Apogee. Online
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